|The Operational Art of War III (2006)||(Playtesters)|
|The Operational Art of War: Century of Warfare (2000)||(Playtesting)|
|The Operational Art of War II: Flashpoint Kosovo (1999)||(Playtesters)|
|Pacific General (1997)||(External Testers)|
|Wargame Construction Set III: Age of Rifles 1846-1905 (1996)||(Playtesting (Beta-Testers))|
|Great Naval Battles Vol. IV: Burning Steel, 1939-1942 (1995)||(External Testing Group)|
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